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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1989-4-20
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pubmed:abstractText |
Tyrosinase was isolated from cultured melanoma cells using a procedure involving solubilization of the enzyme by means of Triton X-100, followed by different types of chromatography and tryptic digestion to make the enzyme soluble even in the absence of detergent. Starting with a membranous material containing 72 mg protein, 0.21 mg tyrosinase was obtained. The recovery of tyrosinase was 36% of the quantity found in the membranous starting material. In order to acquire a completely purified enzyme preparation suitable for amino acid sequence analysis, SDS-PAGE followed by blotting onto a polyvinylidene difluoride membrane was performed as a final step. The apparent molecular weight was found to be 66,000. Determination of the amino acids of the aminoterminal portion by automated Edman degradation showed the following sequence: His-Phe-Pro-Arg-Ala-X-Val-Ser-Ser-Lys-Asn-Leu-Met-Glu-Lys-Glu-X-X-Pro-Pr o-The enzyme purified has an amino acid sequence identical with that of human tyrosinase deduced from c-DNA by Kwon et al. Striking similarities between our amino acid sequence and that predicted by Yamamoto et al. from mouse tyrosinase c-DNA were also observed.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:issn |
0001-5555
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
69
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
125-31
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:2564229-Amino Acid Sequence,
pubmed-meshheading:2564229-Catechol Oxidase,
pubmed-meshheading:2564229-Chromatography, Ion Exchange,
pubmed-meshheading:2564229-Electrophoresis, Polyacrylamide Gel,
pubmed-meshheading:2564229-Humans,
pubmed-meshheading:2564229-Melanoma, Experimental,
pubmed-meshheading:2564229-Molecular Sequence Data,
pubmed-meshheading:2564229-Molecular Weight,
pubmed-meshheading:2564229-Monophenol Monooxygenase,
pubmed-meshheading:2564229-Skin Neoplasms,
pubmed-meshheading:2564229-Tumor Cells, Cultured
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pubmed:year |
1989
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pubmed:articleTitle |
Isolation of human tyrosinase from cultured melanoma cells.
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pubmed:affiliation |
Department of Pharmacology, University of Lund, Malmö, Sweden.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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